Microsoft are currently selling their own Surface Studio 2 all-in-one computer for the staggering price of £3,549 but even that's not compatible with Windows 11!
https://www.theverge.com/2021/6/25/22549725/microsoft-windows-11-cpu-support-tpm-hardware-requirements
The laptop I'm typing this on (which cost over a grand when it was new just 5 or 6 years ago, although I picked it up for £200 on eBay) certainly won't support Windows 11 but I'm not bothered by it because I see no reason to upgrade to W11 for many years yet.
I'm never taken in by manufacturers' hype telling me that I 'must' have the very latest processor, with the very largest drive, a massive storage capacity, the very latest version of Windows and nothing but the official version of Microsoft Office. I've just ordered a 'new' desktop PC on behalf of a friend, who only uses his computer for typing academic texts, plus the usual web browsing and emailing etc. It's got a 3.6Ghz processor, 8 GB of RAM, a 128 GB SSD (which is more than sufficient for his very limited needs) and a fresh installation of Windows 10 on it. (I'll be installing OpenOffice and VLC onto it too). The price I paid for it, inclusive of postage, was just £85. As I've said, I'm definitely not taken in by hype ;-)